What are the time requirements for CPT code 99292?

CPT code 99292 requires each additional 30 minutes of critical care after the initial duration covered by code 99291, though the exact time threshold depends on whether you follow standard American Medical Association (AMA) guidelines or Medicare (CMS) rules.

Time Requirements by Payer Type

• Standard CPT/Commercial Guidelines:
  • Code 99291 covers the first 30–74 minutes.
  • Code 99292 can be billed once the midpoint rule is reached for the additional block, which is 75 to 104 minutes total (15 minutes past the initial 74 minutes). Each subsequent unit of 99292 follows the same midpoint logic for subsequent 30-minute blocks.
• Medicare (CMS) Rules:
  • CMS does not apply the midpoint rule for 99292 and requires the full additional 30 minutes to be completed.
  • Code 99291 covers 30–74 minutes.
  • Code 99292 cannot be billed until a cumulative total of 104 minutes is reached (74 initial minutes + 30 full additional minutes). A second unit of 99292 requires reaching 134 total minutes.

Key Rules for Accumulating Time

• Non-Continuous Time: Critical care time does not need to be continuous. You can aggregate multiple non-continuous encounters or checks throughout the same calendar date.
• Primary Code Prerequisite: Code 99292 is an add-on code and cannot be billed by itself; it must be reported alongside primary code 99291.
• Same Specialty Group: For physicians or qualified health care professionals in the same group and specialty, time is pooled together for the date of service.

CPT code 99292 requires each additional 30 minutes of critical care past the initial 74 minutes, though time thresholds differ between standard CPT guidelines and Medicare rules.

Time Threshold Breakdown

• Standard CPT Guidelines (Commercial Payers):
  • 99291 (First unit): 30–74 minutes
  • 99292 (First add-on unit): Reached at 75 minutes (using the standard CPT midpoint rule, allowing billing after passing 15 minutes into the next block).
  • 99292 (Second add-on unit): Reached at 105 minutes.
• Medicare / CMS Rules:
  • 99291 (First unit): 30–74 minutes
  • 99292 (First add-on unit): Requires a full additional 30 minutes beyond 74 minutes, meaning you must reach 104 total minutes before billing the first 99292.
  • 99292 (Second add-on unit): Reached at 134 total minutes (104 + 30 minutes).
  • Refer to the official CMS MLN Booklet for complete billing guidelines.

Key Rules for Counting Time

• Aggregation: Non-continuous blocks of critical care provided by the same provider (or same specialty/group) on the same calendar date can be added together.
• Exclusions: Time spent on separately billable procedures (such as certain vascular access or ventilator management setups bundled into critical care) cannot be counted toward the critical care time.
• Review the ACEP Critical Care Review for further documentation criteria on active organ system management.

Guidelines for critical care time require a minimum of 30 cumulative minutes of direct or indirect patient care for a patient with a life-threatening condition.

Time Thresholds and CPT Codes

• 30 to 74 minutes: CPT code 99291 (reported only once per calendar date).
• 75 to 104 minutes (Medicare): Still reported as 99291 alone, because Medicare requires a full additional 30-minute increment past 74 minutes before adding the next code.
• 105 to 134 minutes: 99291 + 99292 (for one additional 30-minute block).
• Under 30 minutes: Cannot be billed as critical care; report standard evaluation and management (E/M) codes instead.

What Counts as Critical Care Time

• Direct and indirect care: Time spent at the bedside, reviewing test results, discussing the case with consultants or family, and charting.
• Non-continuous time: Minutes on the same calendar date can be added together.
• Exclusive attention: The clinician must devote full attention to the patient and cannot simultaneously care for other patients during those tracked minutes.

What Does Not Count

• Separately billable procedures: Procedures like central line placement, intubation, or CPR have their own codes and their time cannot be double-counted as critical care time.
• Non-treatment activities: General teaching or literature reviews do not count.

Time-based coding in healthcare allows clinicians to select an Evaluation and Management (E/M) service level based on the total time spent by the provider on the date of the encounter, rather than relying strictly on medical decision-making (MDM) or physical exams.

What Time Counts?

• Face-to-face time: Direct interaction and examination with the patient.
• Non-face-to-face time: Same-day work done before or after the visit, such as reviewing test results, charting, ordering prescriptions, and coordinating care.
• Same-day limitation: All counted activities must occur on the exact calendar date of the service (12:01 AM to midnight).

What Time is Excluded?

• Clinical staff time: Time spent by nurses, medical assistants, or other support staff.
• Separate services: Any tasks or procedures that are billed using a separate, distinct CPT code.
• Travel and general teaching: Traveling to a patient or general academic teaching not directly tied to the specific patient's management.
• Other dates: Any prep or follow-up work done on a day before or after the actual visit.

Documentation Requirements

• Exact total duration: Providers must state the precise total number of minutes spent (e.g., "Total time: 42 minutes"), avoiding vague or approximate language.
• Description of activities: The medical record must outline the specific tasks performed during that time, such as counseling or reviewing outside medical records.
• Clinical necessity: Documentation must reflect why the recorded tasks were medically necessary for the patient's care.

You can review the official AMA E/M Office/Outpatient Coding Guidelines for deeper administrative clarifications.

The national average commercial reimbursement rate for CPT code 99292 ranges from approximately $132.25 to $349.67, with major national payers averaging between $149 and $186.

Average Rates by Major Payer

• Blue Cross Blue Shield (BCBS): ~$149.49
• UnitedHealthcare (UHC): ~$150.68
• Aetna: ~$156.95
• Cigna: ~$186.16

Key Billing and Rate Factors

• Medicare Rates: Traditional Medicare does not publish a flat national dollar amount because rates depend on your local MAC geographic practice cost index (GPCI) and facility vs. non-facility setting. The 2026 work RVU (wRVU) for 99292 is 2.25. You can look up exact local rates using the CMS Physician Fee Schedule lookup tool.
• Time Threshold Rules: Be aware of differences between commercial CPT rules and CMS rules. CPT allows reporting 99292 after 75 cumulative minutes, whereas Medicare/CMS requires a full 104 cumulative minutes (74 minutes for 99291 plus a full additional 30 minutes) before 99292 can be billed.
• Payer Contracts: Commercial, Medicare Advantage, and Medicaid rates vary significantly based on individual contracts and geographic location.